Simpson explained how Fusion GPS was first hired in 2015 to investigate Trump's background in the early stages of the Republican presidential nominating process. Simpson hired Steele to investigate connections between representatives of the Russian government and the Trump campaign.

Simpson testified before the Senate Judiciary Committee in August, and before the House Intelligence Committee in November. Simpson and his business partner, Peter Fritsch, had called for the Senate and House committees to release the testimony.

Glenn Simpson of Fusion GPS testified to the House Intelligence Committee on November 8 and 14, 2017. The committee voted unanimously to release the testimony today.

Many experts are reporting that the testimony is fascinating to read. The testimony covers the facts discovered as Simpson's firm began looking into the financial dealings of the Trump Organization and the Trump campaign. Simpson asserts that he was very surprised when he began to investigate and found so many potential cases of money laundering:

" ... we threw a line in the water and Moby Dick came back, and we didn't know what to do with it at first."